Pneumatic balloon tire



F. GL CUESTA PNEUMATIC BALLOON TIRE Aug. 26, 1952- 2 SHEETS-SHEET 1Filed June 25, 1947 IN VENTOR ATYORNEKS7 :liv

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Aug. 26, 1952 F. G. CUESTA PNEUMATIC BALLOON TIRE Filed June 25, 1947INVENTOR l'awisao [io/z hasta ATTORNEYJ Patented Aug. 26, 1952 UNITEDc--.Barnum.Aric BALnooN-irmn Sjflli'ranciscn A.Gionzatlez-Cuesta,"Sal'n' Sebastiamlspain .a 'llhistginventiontirelatesfitolpneumaticballoon- :tir'e rwneelst.forevehiclesnand1aircraftg and has `for ritsmbj'ect, to provide :an :improved Lconstruc-l ation ofrballoonetirezwhjeelfwnich is `coniparatively r Claims. 0121152.2-"9

urne of air at low pressure is equivalent-t0f.a smallavolume at .highpressureas regards its ,.vveiglitarryfing -.capa`city, the .use 4of -arelatively llovv. .preSsuregreatl-y .minimising the. risk., offfde-LinexpensiveinA production-.aand in which the tirefgs Iia'tion,resulting .frommuncture .or.the..1.ike.

iswcapablepofz being applied zand fremoved rwith =a imnimurnofgphysicaleeiort and .withounthenecessary usefoftting ltoolsforzaleverssuch-fascisme l:required .in connection '-.vvithi` pneumatic tires ofthekind-hithertoeinployed l .y -According;'to.-tne present..-invention,;.the pneumatic balloontire .wheel.-fortvehicles andaircraft comprises an airtighti-envelope: .-Which..is sealed .by.pressing oppositely disposed apertured i. A. furtheradvantageresultmgfrom the, A`usefbf the 'improved wheel .is .that.moreiespeciallv for use withllight .vehiclesit renders .unnecessarylthe .provision oi .an 'independent inner tubasucnas 210 is usuallyemployed.

centrarparts-togethe1-to yprovide ra-fballoon tire :.15struction.dfjtheimprovedlWheel according/.toithe which does...not.requirelamindependent inner tube.

lThe invention furthermore f includes a v'pneumatic balloon-tire wheelfor vehicles and' aircraft invention;

."Ei g."2 a diametrical section corresponding to lig. f1 fbefore theVapplication; of, fthe side. discs; "'fFjgqS/.is ayiew similar -to Fig.'2 showingy 'the comprisingf'a-.hollow .b alloon fotsubstantially disc-20 completewh'eel;

likeV formation with tWO. Opposite central .aper- .tures,..said balloonbeing madeloilayers of fibrous zmaterial, woven or `otherwisecemented..together and provided with an -internallayer or .coatingofvv"-lfig '4 vis 4a "diametrical section '-ofl'the balloon tire.l

"iFigf "5 is aiperspective ',view of a ""tire. `com--posedfoft'brouslayersof materiaLand iruaberlcrotherpiasticmateriannnpermeabiezto f *Fia 'f6-'is a HSide vella/'ation bfthetirej-Ofliigf The sealing of the balloon is effected by means of athreaded metallic element introduced through the oppositely disposedcentral apertures and provided with a nut whereby the opposite centralparts of the balloon may be pressed together. Furthermore, in accordanceWith the invention, discs or plates -`of suitable shape are applied toopposite sides of the sealed balloon to shape the outer part of the tireto a substantially tubular form, said discs or plates being connected bythe threaded metallic element by which the sealing of the tire iseffected. The balloon may be covered externally with a coating or layerof rubber or other material to protect it against Wear structed maycomprise bres or strands arranged to extend in spirals from the centralapertures and in alternate or successive layers the spirally arrangedfibres or strands may be disposed to cross.

Owing to the relatively large air capacity of the improved pneumatictire Wheel according to the invention the running of a vehicle to whichit is tted is rendered more smooth and the tire is less liable to breakdown due to punctures or ruptures as it is well known that a large vol-"showing its* adaptability 'for interiorinspection.

Referring to the Vaccompanying diagrammatic drawings, the improvedballoon-tire Wheel comprises a balloon A (Fig. 4) of substantiallydisclike form having two opposite central apertures B which preferablyare sufliciently large to permit the introduction of the hand for theapplication of patches in the event of puncture, it being necessary toeiect such repairs internally because if patches were applied externallythey would be liable to become detached due to friction on the ground.

The balloon A may be constructed of several layers of fibrous materialR, such as cotton, Woven or otherwise, the layers being cementedtogether and vulcanized as shown in Figs. 5 and 6. The interior of theballoon is provided with a layer or coating C of rubber or other elasticmaterial which is impermeable to air under pressure, and the exterioralso may be `covered with a layer or coating D of rubber or the like'toprotect it against the Weather and to reduce wear and tear. A thickenedrubber or like reinforcement L is provided at the tread portion and asuitable valve V (Fig. 2) is provided for inflation.

The sealing of the balloon is effected by introducing a threadedmetallic element E through the opposite central apertures B and applyinga nut F by which the central parts of the balloon verse bers. .strengthto the completed tire.

tween a flange E' on the element E and a washer F. For additionalsecurity the oposing faces of the ange E' and the Washer F' may becircumferentially ribbed.

When the balloon is sealed, as shown in Fig. 2, discs or plates G areapplied in position one at each side, as shown in Fig. 3, such discs orplates G being'suitably shaped, as shown, to form the external part ofthe tire to a tubular shape. The plates G conveniently are connectedtogether by means of the threaded element E and are also shaped so as toprovide a housing for the iiange E', the washer F and the lock nut F.

When the plates G are in position, air is injected through the valve Vwhich projects through a hole in one of the plates G. The wheel isapplied on the shaft or the axle of the vehicle, being xed by thecentral part or closure element by means of nuts or other suitablemeans.

As can be seen from Fig. 5 of the drawings the fibers in differentsuperimposed layers cross one another. transversely and the bers extendfrom an edge of one of the openings to an edge of the other opening. Thetop layer which is spiralled has the fibers extending at right angles tothe trans- The improved balloon-tire wheel hereinbefore described hasthe advantage that no independent inner tube is required. Furthermore,fitting tools or levers such as usually employed with@5 pneumatic tiresare unnecessary for the mounting of the tire and the tire is less liableto puncture as it accommodates a large quantity of air and thus requiresiniiation only to a relatively `low pressure so that greaterserviceability is ob- .tained than with the known form of pneumatic Theinner layer has bers arranged i425 Such a construction provides added 30It will be understood that the invention is not limited to theparticular embodiment hereinbefore described and that the detailedconstruction may be varied within the scope of the invention.

Having now particularly described and ascertained the nature of the saidinvention and in what manner the same is tobe performed, I declare thatwhat I claim is:

1. A pneumatic balloon-tire'wheel for vehicles and the like comprising ahollow balloon of substantially disc-like formation having two oppositecentral apertures therein, said balloon comprising layers of fibrousmaterial composed of a fiber strand extending in increasing spirals fromthe central apertures, and air sealing means on the internal walls ofsaid balloon.

2. A pneumatic balloon-tire wheel as claimed in claim 1 and whereinsuccessive layers of said bers are disposed to cross.

3. In a pneumatic balloon tire' wheel as claimedv in claim 2, sealingvmeans for said balloon inserted through the opposltely disposed centralapertures therein pressing the inner edges 'of said balloon together andclamping them therebetween and shaping discs coacting with said sealingmeans to shape the outer part of the tire to a substantially tubularform.

4. A pneumatic balloon-tire wheel as claimed in claim 3, said balloonbeing externally covered with a coating uof rubber material and havinga'thickened reinforcement layer of rubber at the tread portion thereof.

FRANCISCO GONZALEZ CUESTA.

REFERENCES CITED The following references are of record in the i'ile ofthis patent:

UNITED STATES PATENTS Number Name Date 476,764 Hall June 7, 1892 799,374Gray Sept. 12, 1905 1,979,371 Diack Nov. 6, 1934 Koski May 20, 1941

